CN114540598A - Cold rolling annealing furnace protective gas supply and recycling method - Google Patents
Cold rolling annealing furnace protective gas supply and recycling method Download PDFInfo
- Publication number
- CN114540598A CN114540598A CN202210115750.8A CN202210115750A CN114540598A CN 114540598 A CN114540598 A CN 114540598A CN 202210115750 A CN202210115750 A CN 202210115750A CN 114540598 A CN114540598 A CN 114540598A
- Authority
- CN
- China
- Prior art keywords
- protective gas
- gas
- annealing furnace
- cold rolling
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 81
- 238000000137 annealing Methods 0.000 title claims abstract description 41
- 238000005097 cold rolling Methods 0.000 title claims abstract description 35
- 238000004064 recycling Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 63
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 239000002699 waste material Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims abstract description 6
- 230000001502 supplementing effect Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 167
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 17
- 238000009826 distribution Methods 0.000 claims description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000746 purification Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 description 19
- 229910052739 hydrogen Inorganic materials 0.000 description 19
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 230000000740 bleeding effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- -1 moisture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a cold rolling annealing furnace protective gas supply and recycling method, which comprises the following steps: s1, conveying gas to each gas storage tank of protective gas to enable the gas storage tanks to reach preset pressure; s2, carrying out gas mixing and proportioning through an electric control unit according to the actual requirement of the cold rolling annealing furnace; s3, supplementing the mixed and proportioned protective gas to a protective gas storage tank according to the pressure of the protective gas; s4, arranging two paths of pressure regulating facilities of 1-device and 1-device at the outlet of the protective gas storage tank to provide low-pressure protective gas meeting the requirements of the cold rolling annealing furnace; and S5, recovering the waste protective gas used by the cold rolling annealing furnace to a protective gas storage tank through a protective gas circulation unit. The invention combines the existing mature process technology, and from the engineering practice, solves the whole system problem from the supply of component feed gas to the recovery and cyclic utilization of the protective gas, reduces the energy consumption and the production cost of the annealing furnace production, and has better application prospect.
Description
Technical Field
The invention belongs to the technical field of metallurgical cold rolling production, and particularly relates to a cold rolling annealing furnace protective gas supply and recycling method.
Background
The cold rolling annealing furnace of the ferrous metallurgy enterprise adopts high-purity hydrogen and high-purity nitrogen as protective gas, and the used protective gas is discharged as waste gas. The metallurgical enterprises invest more in the construction and operation of gas production facilities of high-purity protective gas, particularly hydrogen production facilities, and the hydrogen production process can also generate some solid waste pollution; the hydrogen content in the protective gas used by some types of annealing furnaces is high, and the emission of the protective gas as waste gas is undoubtedly great waste of resources.
In recent years, with the improvement of the requirements of national energy-saving and environment-friendly policies, the research on the technology of recycling and recycling the protective gas in the industry is gradually strengthened. The present application has resulted therefrom.
Disclosure of Invention
The invention aims to provide a cold rolling annealing furnace protective gas supply and recycling method to solve the problems. Therefore, the invention adopts the following specific technical scheme:
a cold rolling annealing furnace protective gas supply and recycling method comprises the following steps:
s1, conveying gas to each gas storage tank of protective gas to enable the gas storage tanks to reach preset pressure;
s2, carrying out gas mixing and proportioning through an electric control unit according to the actual requirement of the cold rolling annealing furnace;
s3, supplementing the mixed and proportioned protective gas to a protective gas storage tank according to the pressure of the protective gas storage tank;
s4, arranging two paths of pressure regulating facilities of 1-device and 1-device at the outlet of the protective gas storage tank to provide low-pressure protective gas meeting the requirements of the cold rolling annealing furnace;
and S5, recovering the waste protective gas used by the cold rolling annealing furnace to a protective gas storage tank through a protective gas circulation unit.
Further, in S1, the gas storage tank includes a nitrogen gas ball tank and a hydrogen gas ball tank, which are respectively transported by the corresponding tube bundle trailers.
Further, S2 is realized by the electric control unit controlling the pressure regulating valve and the flow regulating valve on the corresponding air distribution branch pipe.
Further, S3 is implemented by the electronic control unit interlocking the electromagnetic switch valve on the main pipe for controlling the pressure of the shielding gas storage tank, specifically, when the pressure of the shielding gas storage tank rises to a first set value, the electromagnetic switch valve is closed, and when the pressure of the shielding gas storage tank falls to a second set value, the electromagnetic switch valve is opened.
Further, the specific process of S5 is: and after the waste protective gas is recovered through the recovery buffer tank, the waste protective gas is pressurized by the pressurizing fan and then enters the purification system for treatment, various impurities in the waste protective gas are removed, and the waste protective gas is conveyed to the protective gas storage tank through a pipeline.
Further, the method also comprises the following steps: and S6, in an emergency situation, completely releasing the gas in the protective gas circulation unit.
By adopting the technical scheme, the invention has the beneficial effects that: the invention combines the existing mature process technology, and from the engineering practice, solves the whole system problem from the supply of component feed gas to the recovery and cyclic utilization of the protective gas, reduces the energy consumption and the production cost of the annealing furnace production, and has better application prospect.
Drawings
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
FIG. 1 is a process flow diagram of a cold rolling annealing furnace shielding gas supply and recycling system of the present invention;
FIG. 2 is a flow chart of the method for supplying protective gas and recycling the protective gas for the cold rolling annealing furnace according to the present invention.
Detailed Description
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present application, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations or positional relationships that are based on the orientation shown in the drawings, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1, a cold rolling annealing furnace shielding gas supplying and recycling system may include a gas storage unit 1, a gas distribution unit 2, an electronic control unit 3, and a shielding gas circulation unit 4, wherein the gas storage unit 1 is mainly used for supplying and storing raw material gases (e.g., nitrogen and hydrogen) required by the system. The gas storage unit 1 is mainly provided with high-pressure spherical tanks (i.e., a nitrogen spherical tank 11 and a hydrogen spherical tank 12) as the main facilities for supplying gas externally. The nitrogen and hydrogen are supplied from the outside and can be supplied in various ways (pipeline transportation, tank car transportation, etc.), and the pipe bundle car in fig. 1 is only used for illustration. The raw material (high purity) nitrogen and hydrogen supplied by the tube bundle vehicle are conveyed to the gas storage unit 11, the gas supply is intermittent (periodic), manual control can be adopted, and when the set pressure of the gas storage tanks (the nitrogen spherical tank 11 and the hydrogen spherical tank 12) is reached, the external gas supply is stopped.
The gas distribution unit 2 is mainly used for providing nitrogen-hydrogen mixed gas (namely, protective gas) with different proportions required by users of the cold rolling annealing furnace. The main facilities of the gas distribution unit 2 are nitrogen-hydrogen pipeline facilities, including a flow rate regulating valve 21, a pressure regulating valve 22, a flow meter 23, a pressure gauge 24, and the like. The nitrogen-hydrogen mixed gas is prepared according to the requirements of users, and each branch is provided with a check valve to prevent the gas from flowing backwards. The mixing manifold is fitted with a solenoid operated on/off valve 25 which is actuated in conjunction with a post downstream gas pressure signal (e.g., the pressure of the shield gas storage tank 40). The gas distribution unit 2 outputs the nitrogen-hydrogen mixed gas according to the requirements of users of the cold rolling annealing furnace, and the set mixed flow value is smaller due to possible mixing errors at the beginning. When the proportion of the output nitrogen-hydrogen mixed gas is stable, the flow is gradually increased after the system normally operates. The flow value of the mixture gas stably output by the gas distribution unit 2 is larger than the actual requirement of a user, and the rest gas enters the protective gas storage tank 40 for storage.
The protective gas circulation unit 4 mainly functions to realize the recovery, purification and recycling of the protective gas, and includes a protective gas storage tank 40, a pressure regulating facility 41, a recovery buffer tank 42, a pressure fan 43, a purification system 44, and the like. The type, volume and design pressure of the shielding gas storage tank 40 are determined according to actual needs. The shielding gas tank 40 has a downstream air supply capability after the start of air supply. When the flow of shielding gas from the upstream gas distribution unit 2 is greater than the downstream annealing furnace demand, a portion of the gas enters the shielding gas storage tank 40 for storage. The outlet of the protective gas storage tank 40 is provided with 2 paths of pressure regulating facilities 41, the working system is 1-for-1 equipment, and the protective gas storage tank has the function of providing low-pressure protective gas meeting the requirements of the annealing furnace. The pressure regulating means 41 is composed of a pressure regulating valve provided on the branch pipe and a pressure gauge provided on the main line connected to the cold rolling annealing furnace. The spent shielding gas used by the annealing furnace is pressurized by the buffer tank 42 and the pressurizing fan 43 and then enters the purification system 44 for treatment, so that various impurities (such as emulsion, moisture, oxygen and the like) in the spent shielding gas are removed, and the spent shielding gas is recycled to the shielding gas storage tank 40 through a pipeline. That is, each technical parameter of the shielding gas at the outlet of the purification system 44 can satisfy the requirement of recycling. The booster fan 43 may be commercially available. Preferably, a shut-off valve and a one-way check valve are provided in the outlet line of the purge system 44. The purification system 44 is a relatively mature plant as a core of the recycling unit and will not be described in detail here.
In addition, the shielding gas circulation unit 4 is further provided with a bleeding pipe and a bleeding valve for bleeding the shielding gas exhaust gas under emergency conditions, and the bleeding valve is in a closed state under normal conditions.
The electric control unit 3 is provided with an electric control system and an instrument signal system. The instrument signal system concentrates the detection signals set by the whole system of the invention, outputs control signals after program analysis and comparison, and the electric control system adjusts and controls each adjusting valve, electromagnetic valve and the like set by the whole system. The electric control unit 3 is a PLC-based control system, and the configuration and the program of the electric control unit can be designed and developed according to the actual process requirements.
As shown in fig. 2, based on the cold rolling annealing furnace shielding gas supply and recycling system shown in fig. 1, the cold rolling annealing furnace shielding gas supply and recycling method of the invention may include the following steps:
s1, conveying gas to each gas storage tank of the protective gas to enable the gas storage tanks to reach preset pressure. Specifically, the pressure P is set for the raw gas storage tanks (i.e., the nitrogen gas sphere tank 11 and the hydrogen gas sphere tank 12) of the gas storage unit according to the consumption demand of the user (cold rolling annealing furnace)N、PH. And when the air supply pressure reaches the design value during initial operation, stopping external air transmission. When the pressure value P of the storage tank of the gas storage unitN、PHWhen the value is lower than the set value, it isThe system sends out an alarm prompt, and at the moment, the gas storage unit also needs to be supplemented according to the gas loss of the downstream unit.
And S2, carrying out gas mixing and proportioning according to the actual requirement of the cold rolling annealing furnace through an electric control unit. Specifically, according to the design pressure value required by the downstream process, the gas distribution system performs pressure regulation on the raw gas from the gas storage unit, and according to the parameter fed back by the flow detection signal, the background program performs accurate proportioning feedback regulation. The mixed nitrogen-hydrogen mixed gas meets the requirements of downstream pressure and component proportion. The annealing furnace user needs to analyze the nitrogen-hydrogen proportion and the total amount in the existing protective gas storage tank to change the demand of the protective gas nitrogen-hydrogen proportion due to the adjustment of the working condition, and sends an action instruction to the gas distribution unit nitrogen or hydrogen branch pipe regulating valve to supply gas independently. Or in emergency, the gas in the protective gas circulation unit is completely diffused and input again according to the requirement of a user.
And S3, supplementing the mixed and proportioned protective gas to a protective gas storage tank according to the pressure of the protective gas storage tank. Along with the gas distribution unit 2 continuously outputting the mixed nitrogen-hydrogen protective gas, the gas in the protective gas storage tank 40 gradually increases, and the pressure of the gas storage tank 40 also continuously increases. When the first set value P is reachedNH-1When the air distribution unit 2 is in operation, the electromagnetic switch valve 25 of the air distribution unit 2 is closed, the air distribution unit 2 stops supplying air, and the circulation unit starts to work under independent operation conditions. During the recycling process of the protective gas, the system has inevitable gas leakage. After a period of operation, the pressure in the shielding gas storage tank 40 is continuously reduced. When the gas storage pressure is reduced to a second set value PNH-2In the meantime, the electromagnetic switch valve 25 of the gas distribution unit 2 is opened, and the protective gas storage tank 40 receives upstream gas supply. When the gas storage pressure reaches PNH-1At that time, the solenoid valve closes again. This process occurs periodically during recycling.
And S4, arranging 1-use-1-standby two-way pressure regulating facilities at the outlet of the protective gas storage tank so as to provide low-pressure protective gas meeting the requirements of the cold rolling annealing furnace. The pressure of the whole shielding gas system is kept stable through the shielding gas storage tank 40 and the pressure regulating facility 41.
And S5, recovering the waste protective gas used by the cold rolling annealing furnace to a protective gas storage tank through a protective gas circulation unit. Specifically, the used shielding gas is recovered through the buffer tank 42, pressurized by the pressurizing fan 43, and then enters the purification system 44 for treatment, so as to remove various impurities (such as emulsion, moisture, oxygen, etc.), and then recovered through the pipeline to the shielding gas storage tank 40 for recycling.
And S6, in an emergency situation, completely diffusing the gas in the protective gas circulation unit to ensure the safety of the system.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A cold rolling annealing furnace protective gas supply and recycling method is characterized by comprising the following steps:
s1, conveying gas to each gas storage tank of protective gas to enable the gas storage tanks to reach preset pressure;
s2, carrying out gas mixing and proportioning through an electric control unit according to the actual requirement of the cold rolling annealing furnace;
s3, supplementing the mixed and proportioned protective gas to a protective gas storage tank according to the pressure of the protective gas storage tank;
s4, arranging two paths of pressure regulating facilities of 1-device and 1-device at the outlet of the protective gas storage tank to provide low-pressure protective gas meeting the requirements of the cold rolling annealing furnace;
and S5, recovering the waste protective gas used by the cold rolling annealing furnace to a protective gas storage tank through a protective gas circulation unit.
2. The cold rolling annealing furnace shielding gas supply and recycling method of claim 1, wherein in S1, the gas storage tanks include a nitrogen gas ball tank and a hydrogen gas ball tank, which are respectively transported by corresponding tube bundle trailers.
3. The cold rolling annealing furnace shielding gas supply and recycling method of claim 1, wherein S2 is realized by controlling a pressure regulating valve and a flow regulating valve on the corresponding gas distribution branch pipe through an electric control unit.
4. The cold rolling annealing furnace shielding gas supplying and recycling method according to claim 1, wherein the step S3 is implemented by interlocking an electromagnetic switch valve on the main pipe for controlling the pressure of the shielding gas storage tank by an electric control unit, specifically, when the pressure of the shielding gas storage tank rises to a first set value, the electromagnetic switch valve is closed, and when the pressure of the shielding gas storage tank falls to a second set value, the electromagnetic switch valve is opened.
5. The cold rolling annealing furnace shielding gas supply and recycling method of claim 1, wherein the specific process of S5 is as follows: and after the waste protective gas is recovered through the recovery buffer tank, the waste protective gas is pressurized by the pressurizing fan and then enters the purification system for treatment, various impurities in the waste protective gas are removed, and the waste protective gas is conveyed to the protective gas storage tank through a pipeline.
6. The cold rolling annealing furnace shielding gas supplying and recycling method of claim 1, further comprising the steps of: and S6, in an emergency situation, completely releasing the gas in the protective gas circulation unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115750.8A CN114540598A (en) | 2022-02-07 | 2022-02-07 | Cold rolling annealing furnace protective gas supply and recycling method |
| PCT/CN2022/112386 WO2023147719A1 (en) | 2022-02-07 | 2022-08-15 | Protective gas supply and recycling method for cold-rolling annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115750.8A CN114540598A (en) | 2022-02-07 | 2022-02-07 | Cold rolling annealing furnace protective gas supply and recycling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114540598A true CN114540598A (en) | 2022-05-27 |
Family
ID=81673853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210115750.8A Pending CN114540598A (en) | 2022-02-07 | 2022-02-07 | Cold rolling annealing furnace protective gas supply and recycling method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114540598A (en) |
| WO (1) | WO2023147719A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023147719A1 (en) * | 2022-02-07 | 2023-08-10 | 中冶南方工程技术有限公司 | Protective gas supply and recycling method for cold-rolling annealing furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040841A (en) * | 2002-11-08 | 2004-05-13 | 주식회사 포스코 | Apparatus for controling the deoxidized nitrogen gas used in the cold rolling process, and controling method thereof |
| CN204193872U (en) * | 2014-11-14 | 2015-03-11 | 成都森乐化工科技有限公司 | A kind of preparation system of annealing furnace protective gas |
| CN104846159A (en) * | 2015-06-01 | 2015-08-19 | 苏州苏净保护气氛有限公司 | Continuous annealing furnace with shielding gas recovery function |
| CN108546809A (en) * | 2018-06-29 | 2018-09-18 | 鞍钢集团工程技术有限公司 | One kind being used for cold rolled annealed nitrogen hydrogen retrieval system and method |
| CN108690905A (en) * | 2017-04-07 | 2018-10-23 | 江油立航金属材料有限公司 | The stainless steel hot processing protection gas circulatory system |
| CN108690904A (en) * | 2017-04-07 | 2018-10-23 | 江油立航金属材料有限公司 | Stainless steel hot processing protection gas circulation utilization method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06306454A (en) * | 1993-04-21 | 1994-11-01 | Sumitomo Metal Ind Ltd | Method for reusing atmospheric gas in heat treatment furnace |
| US6881242B2 (en) * | 2003-01-13 | 2005-04-19 | Ati Properties, Inc. | Hydrogen reclamation apparatus and method |
| CN101956061B (en) * | 2010-07-27 | 2012-07-25 | 苏州品源气体设备有限公司 | Process and device for recovering and recycling protective gas of bell-type bright annealing furnace |
| CN110699526B (en) * | 2019-10-18 | 2021-07-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Operation method of nitrogen interlocking control system for hot galvanizing vertical annealing furnace upper and lower furnace pressure detection |
| CN110819772B (en) * | 2019-10-28 | 2021-04-02 | 鞍钢股份有限公司 | Nitrogen-hydrogen protective gas control method for continuous annealing furnace |
| CN111589299A (en) * | 2020-05-14 | 2020-08-28 | 中冶南方工程技术有限公司 | Nitrogen-hydrogen protective gas separation system and method for steel rolling annealing furnace |
| CN112941287A (en) * | 2021-01-26 | 2021-06-11 | 中冶南方工程技术有限公司 | Cold rolling annealing furnace waste hydrogen recycling system and cold rolling annealing furnace hydrogen supply system |
| CN114540598A (en) * | 2022-02-07 | 2022-05-27 | 中冶南方工程技术有限公司 | Cold rolling annealing furnace protective gas supply and recycling method |
-
2022
- 2022-02-07 CN CN202210115750.8A patent/CN114540598A/en active Pending
- 2022-08-15 WO PCT/CN2022/112386 patent/WO2023147719A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040040841A (en) * | 2002-11-08 | 2004-05-13 | 주식회사 포스코 | Apparatus for controling the deoxidized nitrogen gas used in the cold rolling process, and controling method thereof |
| CN204193872U (en) * | 2014-11-14 | 2015-03-11 | 成都森乐化工科技有限公司 | A kind of preparation system of annealing furnace protective gas |
| CN104846159A (en) * | 2015-06-01 | 2015-08-19 | 苏州苏净保护气氛有限公司 | Continuous annealing furnace with shielding gas recovery function |
| CN108690905A (en) * | 2017-04-07 | 2018-10-23 | 江油立航金属材料有限公司 | The stainless steel hot processing protection gas circulatory system |
| CN108690904A (en) * | 2017-04-07 | 2018-10-23 | 江油立航金属材料有限公司 | Stainless steel hot processing protection gas circulation utilization method |
| CN108546809A (en) * | 2018-06-29 | 2018-09-18 | 鞍钢集团工程技术有限公司 | One kind being used for cold rolled annealed nitrogen hydrogen retrieval system and method |
Non-Patent Citations (1)
| Title |
|---|
| 罗时政: "《干熄焦技术问答》", 冶金工业出版社, pages: 33 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023147719A1 (en) * | 2022-02-07 | 2023-08-10 | 中冶南方工程技术有限公司 | Protective gas supply and recycling method for cold-rolling annealing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023147719A1 (en) | 2023-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114540598A (en) | Cold rolling annealing furnace protective gas supply and recycling method | |
| CN113549717A (en) | Blast furnace gas injection system for Europe and metallurgy | |
| CN109611686A (en) | Metallurgical space division oxygen supply pipe network system and its operation method | |
| CN217103976U (en) | Cold rolling annealing furnace protective gas supply and cyclic utilization system | |
| CN106122768A (en) | The method of air in the disposable series connection many spherical tanks of displacement | |
| CN112626560B (en) | Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method | |
| KR101990760B1 (en) | Removal of dissolved gases in makeup water of a nuclear reactor | |
| CN101482223B (en) | Air distributing device and method | |
| CN108826011A (en) | A kind of control method and system quickly filled based on hydrogenation stations hydrogen energy source | |
| CN206093516U (en) | Pressure regulating system is joined in marriage to gaseous storage | |
| CN115522003B (en) | Hydrogen-rich blast furnace ironmaking system based on energy conversion and production control method thereof | |
| CN202390455U (en) | Oxygen-enriched balancing device for blast furnace | |
| CN218001149U (en) | Argon gas recovery system | |
| CN218951242U (en) | Energy-saving and environment-friendly device for shielding gas of electronic glass tin bath | |
| CN108103254B (en) | The high furnace control system of hydrogen-rich and method humidified based on low-quality oxygen and greatly | |
| CN212356526U (en) | Recovery unit of hydrogen-containing tail gas in caprolactam production technology | |
| CN102061379A (en) | Oxygen-enriched sintering process method | |
| CN218910416U (en) | Oxygen supply device based on air separation system | |
| CN110645475A (en) | Blast furnace oxygen conveying system and working method | |
| CN211289584U (en) | Oxygen conveying system of blast furnace | |
| CN220376372U (en) | Combined regulating and controlling device for preparing ammonia water by cross process | |
| CN217922353U (en) | Water supply device for electrolytic hydrogen production | |
| CN218193277U (en) | On-spot system of preparing of carbon dioxide and argon welding protection mist | |
| CN216952633U (en) | Nitrogen-doped redox valve set of anode furnace | |
| CN109941758B (en) | Pulverized coal pressurized gasification methanol device CO 2 Automatic recovery adjusting purified gas system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |